250121250125 has 32 divisors (see below), whose sum is σ = 316192312800. Its totient is φ = 197514240000.

The previous prime is 250121250109. The next prime is 250121250167. The reversal of 250121250125 is 521052121052.

It is a happy number.

It can be written as a sum of positive squares in 16 ways, for example, as 233159573956 + 16961676169 = 482866^2 + 130237^2 .

It is not a de Polignac number, because 250121250125 - 2⁴ = 250121250109 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a junction number, because it is equal to n+sod(n) for n = 250121250094 and 250121250103.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6667421 + ... + 6704829.

It is an arithmetic number, because the mean of its divisors is an integer number (9881009775).

Almost surely, 2^250121250125 is an apocalyptic number.

250121250125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

250121250125 is a deficient number, since it is larger than the sum of its proper divisors (66071062675).

250121250125 is an equidigital number, since it uses as much as digits as its factorization.

250121250125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38114 (or 38104 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 26.

Adding to 250121250125 its reverse (521052121052), we get a palindrome (771173371177).

The spelling of 250121250125 in words is "two hundred fifty billion, one hundred twenty-one million, two hundred fifty thousand, one hundred twenty-five".